| # | Letters of Interpretation |
|---|---|
| 1 | - 1910.134(f)(2) - OSHA requirements for respirator fit testing with and without facepiece accessories |
| 2 | - 1910.134(f)(2) - Respirator fit test requirements |
| 3 | - 1910.134(f)(2) - Fit testing and medical monitoring requirements for wearers of filtering facepiece respirators. |
| 4 | - 1910.134(f)(2) - Clarification of respirator costs, annual training, and "effective" seal checks. |
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